php - 通过比较PHP中的键来拆分数组

Question

我有一个这样的数组；

Array
(
    [database1.table1.fieldname] => "test"
    [database1.table1.fieldname1] => "test1"
    [database2.table2.fieldname] => "test2"
)

这里对于前两个值database name和table name是相同的。字段名在这里并不重要。对于第三个值，数据库名称和表名称不同。我想要实现的是我想通过比较数据库名称和表名来将此数组拆分为单独的数组。我需要实现这样的目标；

Array
(
    [database1.table1.fieldname] => "test"
    [database1.table1.fieldname1] => "test1"
)

Array
(
    [database2.table2.fieldname] => "test2"
)

有可能做这样的事情吗？

Answer 1

试试喜欢

foreach($my_arr as $key=>$value) {

    $new_key = explode('.',$key);
    if($new_key[0] == "datebase1" && $new_key[1] == "table1") {
         $arr1[$key] = $value;
    } elseif ($new_key[0] == "datebase2" && $new_key[1] == "table2") {
         $arr2[$key] = $value;
    }
}

或者你可以试试

foreach($my_arr as $key=>$value) {

    $new_key = explode('.',$key);
    $new_arr[$new_key[0]][$new_key[1]][] = array($key=>$value);
}
print_r($new_arr);

输出 ：

Array
(
  [database1] => Array
    (
        [table1] => Array
            (
                [0] => Array
                    (
                        [database1.table1.fieldname] => test
                    )

                [1] => Array
                    (
                        [database1.table1.fieldname1] => test1
                    )

            )
    )

  [database2] => Array
    (
        [table2] => Array
            (
                [0] => Array
                    (
                        [database2.table2.fieldname] => test3
                    )

            )

    )
)

Answer 2

这里是。拿着。

function splitDatabaseArray($array)
    {
    ksort($array);
    $return = array();
    $last_database_table = array();
    foreach ($array as $index => $value)
        {
        $database_table = array();
        list($database_table[0], $database_table[1]) = explode('.', $index);
        if ($last_database_table != $database_table)
            $row = &$return[];
        $last_database_table = $database_table;
        $row[$index] = $value;
        }
    return $return;
    }

$array = array
    (
    'database1.table1.fieldname' => "test",
    'database1.table1.fieldname1' => "test1",
    'database2.table2.fieldname' => "test2");

var_dump(splitDatabaseArray($array));

http://3v4l.org/TC542